Product placement is no longer restricted to movies and TV sitcoms. Pay attention as you zoom past the Pontiac billboard next time you play “Need for Speed: Carbon.” As new cars become available, the image changes. The devices are also featured in “Project Gotham Racing 3” and “Forza Motorsport 2.” Microsoft’s Massive Unit is in charge of updating in-game advertising and claims that the average age of a gamer is now 33. Amazingly, they also find that studies of the players show that 69% said they were more likely to consider purchasing a car they had seen in a game. We hope this trend doesn’t get so distracting that your gaming runs you right into one of those virtual billboards.